Stapling machine



z. E. RUSSELL 1,704,517

STAPLING MACHINE I Filed July 21, 1924 11 Sheets-Sheet 1 March 5, 1929.

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' 1 sTAPLINcT MACHINE Filed July 21, 1924 11 Sheets-Sheet 8 Mal-c115, 1929. Z.IE. RUSSELL 1,704,511

STAPLING MACHINE Filed July 21, 1924 "1; sheets-Sheet 9 Fig. /0

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titer- ZACHARY E. RUSSELL, 0F SATJ'K RAPIDS, MINNESOTA, ASSIGNOR TO CLYDE W BEN, OF SA'UK RAPIDS, MINNESOTA.

r s'rArLIne MAC INE.

Application filed July 21, 1924. Serial No. 727,215.

, This invention relates to a sta'plingmachine and while the machine is capable of stapling many different articles, one particular use thereof is in stapling together the slats at certain portions of a; porchycurtain formed of flexibly connected slats. manufacture, these curtains are made on a loom and then the slats and the molding are stapled together at the top of the curtain and the slats are also stapled together at-the bottom of the curtain. A lon er staple is required for securing together the partsat the top-of the curtain than at the bottom thereof.

Itis an object of this invention to provide a machine which will quickly and efficiently staple together the various parts above referred to.

it is a further object of the invention toprovide a machine adapted to travel along the curtain longitudinally of the slats thereof and to insert and clinch the staples at spaced points along the curtain.

It is also an object of the invention to provide such a machine which travels alongthe curtain and staples together the parts thereof at different intervals, which machine forms the staple while in motion and stops momentarily to drivethe staple.

t is a further object of the invention to provide a machine which will travel in'one direction along the curtain and insert and clinchstaples of a certain length and which may quickly and easily be reversed and will tr vel in the opposite direction and'insert and clinch staples of. a diiierent length.

It is thus another object of-the invention to provide such a stapling machine with means for guiding and progressing the same and intermittently arresting the movement thereof in definite positions. v

It is a still further object of the invention to provide a stapling machine having one staple. forming and driving mechanism in combination with two feeding mechanisms arranged to feed,- respectively, difi'erent lengths of wire, which parts are driven by'one driving mechanism, means being provided for throwing into and out of operation either feeding mechanism.

be adjusted to suit variousthicknesses of the work.

In the ing and progressing means, said ti shown on an enlarged scale ;-I

It is still further an object ofthe invention to providea stapling machine having parts p tially on the-line'6,6of Fig. 2; adapted to clamp the work, which parts may s Fig. 7 is a view partly'in end'elevation and I It is further an object of the invention to provide a staple driving and clinching mech anism having means forfcrossing the ends a of the staples after they aredriven through' thematerial and before thesame are clinched" tightlyin position. i p 5 f It is also an object of the invention to provide a novel and efficient form' of staple forming and "driving mechanism 1 including means for guiding the wire during the'wire feeding and staple forming operation.

It is another object of the invention to 'pro- I vide such a staple forming and drivingmech anism, as set forth inthe'above' paragraph,i

which guiding means comprises a swinging member having a guiding groove formed therein through which groove the wire swings in the staple forming operation, said swing- 1 ing member-being swung to" one side by the movement of, the staple former;

It is still another object of the invention to provide such a'machine, as above set forth,

with various meansfor quickly and easily controlling the various movements and ad-- justmen'ts thereof. T

'- These andother objects and advantages of the invention will be fully set forth in the following description made in connection with the accompanying drawings in which like reference charactersrefer to the" same parts throughout the different views, and in which, H r

. 1 is a viewin front elevation-of the Fig. mach1ne,.-sa1d vi w being somewhat diagrammatic I Fig. 2 is a view in front elevation of the Fig. 3is a view in end elevation of the ma chine as seen from the right of .Figs. 'l-and and'with some parts broken away;

inacliineshowing only a-portion ofthe guide gure being Fig. 4t is" a vertical section taken substan tially on the line t l of Fig. 3, as indicated by the arrows;

Fig. 5 is a vertical section take substanti ally on the line 55 of 2, as indicated by the arrows Figs. 4tand'5 being shown on Y 1 anenlarged scale; v Fig. 6; is a-vertica-l sectiontaken sub t partly in vertical, section'yand taken'isuhstantially onthe line 7-7 of Fig.2; 7

2, the guide channels being shown in section 7 taken substantially on the line 8 -8 of 2, as indicated by the arrows;

Fig. 9 is a somewhat diagrammatic View on a plane indicated by the line 1414 of Fig. 3-, as indicated by the arrows;

; Fig. 15 is a view in vertical section on the line 1515 of Fig. 11, as indicated by the arrows;

' Fig. 16 is a view in horizontal section taken substantially on the line 16-16 of Fig. 2; Figs. 17 and 18 are plan'views of the driving plungerand adjacent parts showing the same in difierent positions of operation; 5 Fig. 19 is a partial view in side elevation,

A pair of spaced parallel channel bars 1 having and as seen from the left of Fig.9; 7

Fig. 20 is a partial view in side elevation of the machine, as seen from the left of Fig. 2; Fig. 21 is a partial View in rear elevation iof the machine;

Fig. 22 is a view partly in side elevation and partly in vertical section ofthe cam shaft control lever; 1

Fig. 23 is a partial view in front elevation of the machine traversing and brake mechanism'; Y

Fig. 24 is a view partly in side elevation and partly in verticalsection of the clutch lever;

Fig. 25 is a bottom plan view of a wedg cam and co-operating parts.

Referring to the drawings, the machine, as

a Whole, ismounted and suspended from a their channels facing each other; A truck .,comprising longitudinally extending bars 2 moves between said channels 1 andhas a pair ofwheels 3 at each side thereof, said wheels being transversely alined at each end of said truck and supported upon fixed axles 4, the longitudinal members 2 being connected to said axles by'nutted yokes 5. Also secured to said bars 2 is a frame member or box 6 comprising spaced plates in which are secured the bolts or rods 7 depending therefromin quadrilateral spaced relation and which carry at their lower ends cross bars .78 extending 'endwise' at each end of said frame or casing 6. Four rods 9 are threaded V at the upper ends and secured by nuts 9". disposed at both sides of bars 8, said rods 9- passing throughthe bars 8 and depending therefrom in quadrilateral relation, said rods,

9, in'the' embodiment of the invention illustrated, being shown as rectangular in cross section. The rods 9 are secured at their lower ends to a box or casing 8. This casing 8 forms a houslngfor various drlving parts and a support for various parts of the ma chine. 0n top of the casino; 8 a motor 9 is disposed illustrated as of a common type of electric motor. The motor shaft of the motor 9 extends to the left, as shown in Fig. 2, and

extends into a gear housing 10 being sup ported in suitable anti-friction bearings 11- in said housing. Said shaft carries a pinion '12 meshing with and driving agear 13 mounted on a shaft 14 extending through the housing 10 and having bearings in the sides thereof, which shaft 14 also carries pinion 15 meshing with and driving a large gear 16. The gear 16 is secured to a shaft 19 journaled in a bearing formed in a hub in said gear housing and has its other end journaledin 'a hub 10 projecting from the end of a sub- I stantially rectangular portion 10 of said gear v housing. Oppositely disposed beveled. gears 17 and 18 are journaled on the shaft 19 A beveled gear, 18 is mounted on a shaft 21 supported in one side of the portion 10 of the V housing and meshes with the gears 17 and 18. A clutch 20 is splined to the shaft 19 and adapted to be moved longitudinally thereof to engage either of the gears 17 or 18,;which gears have clutch teeth at their front ends, or to be disposed in neutral position between said gears. It will be seen that said gears and I clutch form a reversing mechanism for driving the gear 18 in opposite directions. The shaft 21 extends through the portion 10 of the gear housing and is provided at one side thereof with a sprocket wheel 22 adapted to drive a chain 23,.f0r a purpose to be later described. The'clutch 20 is provided with the usual central groove adapted to receive the prongs 24 of a clutch fork 24 which is pivoted in lugs formed on'one wall of the housing. portion 10 and has a handle portion 24 projecting at the front side of said hou'singportion 10*. a j i The chain 23 passesupwardly in an inclined direction from the sprocket 22. and

passes overgand drives a sprocket 25 secured to a shaft 26 journaled in anti-friction bear? ings 27 mounted in the sides of casing 6, said shaft projecting at the end of said casing. At the end of shaft 26 opposite thesprocket 25 is secured a crank disk 28 having a crank stud 29 secured therein by a suitable clampingnut, which stud carries a-roller 3O mount- 7 ,ed on an anti-friction bearing on said stud;

Said stud has an outer, flangeor collar'29? thereon from which projects outwardly a central pin 29". vertical alinement'with the depending teeth, 31 ofa rack bar 31 secured to the outer The roller 30 is disposed in III side of oneof the channel members land depending therefrom. The casing 6 has a slide 32 mounted at one side thereof in suitable guides, which slide hashollow. sleeves at each side thereof.

top of said plungers. ne slide 32 is engaged at its central portion by one end of a lever 35 (see Figs. 3, and 23) pivoted at its other end in casing 6, and carrying a 'cam roller 36 engaged by a cam 37 on shaft 26. Slide 32 is normally in its lowest position but is raised by lever and through springs 34 presses plates 33 against the channel member 1. It will be noted that cam 37 is located on the opposite side of shaft 26 to roller30 so that as the latter is traveling around theend of a tooth 31 the casing 6 will be stationary and held so by the brake or friction plates 33 7 The parts 32 to 37 therefore form a brake mechanism adapted to engage and clamp the channel bars 1 so as to hold the machine securely in stationary position between itsintervals ofmovement. r o

A V-shaped'bar 39 is supported from the channel bar 1 carrying the rack 31 by spaced supporting members 39 anda frame or plate member 40 ismounted on thebar 39 having secured thereto spaced rollers a1 resting on the top of said bar, said plate 40 beingformed with a V-shaped groove adapted to fitover the lower edge of bar 39. The plate 40 is adapted to be held in various positions longitudinally of the bar 39 by a latch lever 42' having a square or angularly shaped socket at one end adapted to fit over the studs or bolt heads on the bolts which secure the ac-k 31 to the channel bar 1, as shown in Fig. 1. A flat bar 43 is secured adjacent the bottom edge of the plate 40 projecting below said edge and has anotherbar 44 secured thereto and overlapping the bottom edge thereof, as clearly shown in 3 and 5. Another bar 45 is secured to and projects outwardly from the rack 31 at the right hand end thereof, as shown in Fig. 1, and this bar also has a plate or bar 46 secured thereto and overlapping the bottom edge thereof. Both bars 44; and 46 have downwardly depending arms l4? and e6 respectively, having hori- Zontal pivots 46 in their lower ends to which arewsecured upwardly extending arms51 respectively, said arms having a slight swing,- ing motion against the tension of coiled springs 50 secured to their outer upperends and to arms as and 46. Said pivots 46 also carry downwardly extending arms 51 and 51'? for a purpose to be laterdescribed. Arm 51has inclined cam face adapted to be engaged bypin 29 carried by disk '28.

The clutch 20 is, as stated, adaptedtobe movedby a lever 24:, theend24 of which projects forwardly from the housing extension 10 and is pivoted to an arm which is secured to the lower endofan oscillatable rod 66 supported in brackets 67 projecting forwardly from one of the rods 9. Said rod 66 is manually, turned to operate the clutch by a lever rod 67 having a handle 68 slidable thereon adjacent each end. Each-handle 68 is connected by a link 69 to one-of two reversely disposed pawl levers 70pivoted on a plate 71 having a rib projecting upwardly at one, edgeforming oppositely facing ratchet teeth adapted to be engaged by the free ends of levers 70, which levers form pawls. The lever bar -67 is thusnorinally locked against rotation, but by ,sliding one of the handles 68 outwardly to release its pawl 70, said lever bar may be swung to move therclutch inthe desired direction. The rod 66 is automatically moved to throw out-the clutch by having an arm 72 secured to its top end, which arm has a vertical pin 1 or bolt secured therein passing through a small bearing or lug 73 secured tOIOHGYSldQ I of a bar 74, which bar is thus supported at one end by the rod 66 a'ndat its other end is slidable in a bracket 7 5 secured to and pro jecting forward from one of therods 9. The bar 74 has upstanding spaced ears thereon from whichproject inwardly roller-carrying pins 75 The rollers on these" pins are in horizontal alinement with the depending;

arms 51 and 51 whicharins areuadapted to be contact-ed by said rollers when the in'a-I chine reaches either end of its travel.

By the mechanism so far described, the machine is traversed intermittently along the channel bars 1 and stopped at the end of its travel. The operation, will bemore fully and completelydescribed in the general descrip tion of the operation. 1

The mechanism for forming andlnsertlng the'stapleswi-ll now be described. gl he va- 7 rious staple forming and handlingparts are drlven from a camshaft 52 having oneend ournaled in a bearing inserted n the end of easing Sand having its other endjourr a.

naled in a bushing in the end of shaft 19.l The shaft 52 is coupled to and uncoupled from the shaft 19 by aslidingspring-pressed locking bolt 53,-the spring of whichnormally urges said'bolt int-o looking position, as shown in Fig. 4. Said bolt, however, normally is held out of locking position by a wedge-shaped lug 54? forming partof a lever 54 pivoted at the rear side of theeasing'Sl and extending forward. through an opening inthe frontof said casing. The lever-54cfalso I pro ects through the rear of the casing 8 and is pivoted at its rear end to a block 55. A.

pair of rods or headed and nutted bolts 56. extend through the block 55' and through a block 57 verticallys 'iaced. therefrom and I a pair of coiled springs 58 surround said rods 01' bolts 56', normally holding the lowerblock, j

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against the lower heads of said rods or bolt s. The upper block 57 however, can be nected to one end of a shaft 61 projecting throughand ournaled 1n the casing 6, said shaft having at its opposite end a curved arm, 62 adapted to pass beneath the depending teeth 31 and carrying at its other end a roller 68 which is adapted to engage the bottom of the bars 43 and 45. I The roller 63 normally is held at the outer end of headed stud 63 by a spring 63 surrounding said stud. Said roller 63 is adapted to be moved inwardly at a. certain point in the travel of the machine by wedge-shaped cams 48 and 45 on bars 43 and 44, and 45 and 46, respectively. The shaft 61 is placed under tension to hold the roller 63 against the bars 43 and 45 and to swing said roller upwardly by a torsion spring 64 secured'at one end of said shaft and at its other end to the casing 6, saidspring being disposed between arm 62 and the end of said casing. It will thus be seen that if the arm 62 is allowed to'swing upwardlythe shaft 61jwill'be rotated and rod 59 pulled upwardly so, that the wedge block 54* on the lever 54 will be depressed and the locking bolt 53 allowed to lock the cam shaft 52 to the shaft 19. The wedge block 54 may also be depressed'an-dthe cam shaft 52 locked to the shaft 19 by pressing down on the forward end of lever 54. The lever 54 also has alug projecting. from the block 54 which forms a stop adapted to be contacted'by a stop lug 5.2 on shaft 52 so that said shaft is stopped in a certain definite position; as will be later described.

The staple forming and handling parts, as they are operated from the cam shaft 52,

' will be referred to with reference characters having the prefix a. On the shaft 52 are dis posed four spaced cams a a a and a, respectively. The cam a engages the roller on a bell crank lever a having a lower slotted arm a received 1n the lower forked end of he lever a and connected thereto by a headed and nutted pivot bolt a"; The saidfork has transverse slots in its arms through which projects a headed and nutted bolt (i passing through a hole in the arin a. Athreaded stud a extends through the. lever a at the rear ,ofits fork and has a forwardly projecting rounded lugadaptedto engage in' a rounded slot in the rear end of arm a said stud (4 having awasher and a nut on each end thereof so that it may be adjusted transversely of lever a .An angular adjustment of'the lower arm a of the lever is thus effected. The bolts a and a? may be tightened after the desiredadjustment is made. The

and said auxiliary anvil a also has a lip a overhangingthe top of the casing in which said anvil members are mounted. A plunger a; slides through a plugthreaded into the top of the main forming anvil a and'has a head at lower end resting on the rearwardly' projecting portion of the auxiliary anvil a A spring a surrounds the plunger a and anvil 0: It will be noted that the reartwardly P j g portion of anvil a is spaced a certain distance from the bottom of the'groove in the forward portion of main forming anvil a Upon rotation of'cam (1 the lever a with its arm a will be oscillated and the anvils a and a successively raised.

The cam a has a roller. engaging therewith carried by a lever a which has anarm at its lower end, angularly adjustable relatively thereto by parts similar in all respects to the parts a and a described in connection with the arms a of lever a The lower end of lever arm a is rounded and'engaged in a slot formed between two upwardly pro jecting portions on astapledriving plunger a having a small groove (r extending across its front face, the front. portion of said'plungor being beveled. Plunger a" has s'e1ni-cylindrical ribs along its sides at its" front end for a purpose to be later described. As shown in Figs. 6 and 13, the plunger a movesin a rectangular passage formed in the casing forming part of the machine frame." It will be seen that when earn a revolves thelever (6 will be oscillated to move the plunger (0 forwardly and rearwardly.

The cam a has a roller engaging there with carried by a lever a disposed at one side of the lever (4 and'the lower end of lever a also has its lower end equipped with an adjustable arm a connected thereto in the same manner that the arms a? and (6 are connected to their respective levers. The bottom of said lever arm a is also rounded and disposed in an opening or slotformed in a former (f -having a dividing slot. at of rectangular cross section at its forward end, which slot forms, ineffect, arms at each side thereof, which. it will be noted, are of different widths.

1252.5 shown in Figs. and 12. Said former contacts with said-plug and the auxiliary The former or is adapted to be moved forwardly and rearwardly'by v as shown in Fig. 14, has a V-shaped upper portion sliding in a dove-tailed groove in the casing portion (1 It may be here noted that said casing portion a forms a carrying body or member for the main forming anvil a and auxiliary anvil a and plunger a and the former a. Said portion ta as shown in Figs. st and 14, has upwardly extending side portions connected to and depend ng from the casing 8. The former memher (0 has separate forming dies (r secured therein which have slots in their side edges and which are disposed immediately adj acent the slot a. As seen in Fig. 14;, these dies are provided with slots on both edges so that they may be reversed. The said former a also has inserted in the side edges of its lower rectangular portion hardened cutting plates a The three cam levers a a and a are all provided with hubs mounted, side by side and swinging on a shaft a secured in bosses or hubs on portion 64 of the frame. Each of said levers also has a rearwardly extending plunger a pivotally secured at its rear side and extending through a bushing a threaded into a .rearwardiy extending portion a of the casing 8. A coiled compression spring a surrounds each of the plungers a and acts to press said plunger and said lever inwardly, thus holding the rollers on said levers securely in engagement with the surfaces ofv the cams a a and a". The tension of springs a can be adjusted by screwing the bushings (r inwardly or outwardly. At the right side of the lower rectangular portion of former a, as seen in Fig. i l, is a block (4 fixed to the lower portion (4 of the frame and said block has extending therethrough a hardened wire guiding tube a. the inner end of which has its plane face in close alinement with the cut.- ter plate a and said tube forms the shear plate against which a wire is cut by said cutter plate. The said rectangular portion of former a, at its left side, as seen in Fig; 14, is engaged by a forwardly and rearwardly movable slide (4 mounted on a dove-tailed rib a secured to the bottom of the frame portion (4 The slide a also has a hardened wire guiding tube a disposed transversely therein the inner end of which tube has its plane face in alinement with the outer edge of the other cutter plate a, said tube forming the shear plate for said cutter. As shown in Fig. 11, the front face of slide a is disposed considerably in the rear of the face of block e and a stationary block a isdisposed immediately in front of slide a and bolted to the undersurface of frame portion a, said block a being of the same height and width as the slide a The block a is provided with a narrow slot a disposed in line with the end of a swinging guiding member a Said member a swings into said slot a when it is swung outwardly the movement of the former a. The block a and the slide a each have pivoted therein a swinging guiding member a? having a substantially circular portion about its pivot and a laterally projecting portion having a forward substantially radial edge and an outer circumferential edge and a rear edge substantially tangential to said circular portion. Said laterally projecting portion has a narrow slot a extending therethrough of slightly larger diameter than the diameter of the wire used for the staples. Said members a, as shown in Figs. 11 12, 13 and 15, are mounted in slots formed in the members Q28 and a and said members normally are in theposition shown in Fig. 12 and in dotted lines in Fig. 11, with the substantially radial edges thereof substantially .alined with the axes of the tubes a and a It will be noted that the members at in the respective members a and a are reversely disposed and each member has a plunger rod or connected thereto passing through a threaded bushing a and having a coiled compression spring a coiled thereabout, which springs normally press said plungers to swing the members a to their normal positions. Said members a are swung outwardly by the forward movement of the former a, as Will be later described. r

The frame portion a has rectangular slots formed in its opposite sides in which the sides a of the slide a move, said sides a being held in position by theside plates LL The slide a has upwardly projecting portions at each side (see Figs. 8 and 10) between which.

are disposed cams a mounted on a shaft 00 extending through the portion a of the frame. Said cams a when rotated, movezthe slide a forwardly and rearwardly. The

shaft or performs several functions and will again be referred to. The members a .extend forwardly and support a frame or casing portion a adapted to supportand guide the clinching parts for the staple. Said portion a comprises vertically spaced portionshaving a pivot shaft a secured'therei-n .on which swings a bell crank lever to. Said lever has its arms disposed outwardly and downwardly and its outwardly extending arm is pivoted by a link w to the outer ,end of a lover a, which lever oscillates about a pivot shaft a carried in casing 8 and which lever has an upwardly extending arm-provided with a cam roller engaging cam a mounted on the cam shaft 52. V Lever a hasa plunger a pivotally secured thereto and projecting outwardly, said plunger being surrounded by a compression coiled spring a bearing against the head of said plunger .at its inner end and against a plateau? at its outer end, which plate is carried on spaced threaded studs (4 extending outwardlyfrom the front of casing 8. The stud-s a .-are pr ovi ded with adjusting nuts at each side of said so that the tension on spring a c n be spring thus acts to hold the cam roller on lever a against its cam. The upper end of link a has a pin a projecting at each side disposed in an elongated slot formed in the outer end of lever a forming a'lost'motion connection, the upper end of link a being bifurcated. The pin a. pro jects at each side of the link a and has vertical apertures extending therein through which pass rods a, being threaded at their upper ends and provided with nuts. The rods a have hubs at their lower ends and a headed pin a passes through these hubs through the bifurcated lower end of link a and through the end of lever a which is rec'eived in the bifurcation or fork of link a. Compression coiled springs G53 surround the rods 051 between the pin 64 and the nuts on said rods. The link a is also preferably made in two telescoped and threaded sect-ions for the purpose of adjustment. The downwardly extending end of lever a is rounded and disposed in an aperture formed ina varied, which Y clinching anvil or plunger a (see Figs. 9,

17 and 18) which is mounted for longitudinal movement in the casing or head a. The lever a has a two-part longitudinally adjustable link a having forked ends pivoted thereto intermediate the ends of said lever, said link being pivoted at its lower end to the upper end of a plunger a adapted to i move vertically in guideways formed in the slots.

head a. The plunger a has its front end beveled rearwardly .at the bottom thereof to form a wedge and said beveled end is adapted to be'projected into an opening a of a longitudinally movable work-contacting slide a divided at its inner end and mounted to slide in a guideway formed in the head The slide a has slots formed in its forward end at each side of the plunger or clinching anvil a and 'reversely arranged levers a. are pivoted to said slide and disposed in said Said levers have inwardlyprojecting chisel-like points a at the lower ends and are further provided with inwardly projecting lugs intermediate said ends a and their pivots and at the upper ends thereof beyond said pivots. The plunger or clinching anvil a has a forward end formed on a slight concave curve and closely in the rear of said forward end has oppositely projecting double wedged portions a immediately in the rear of which said plunger or clinching anvil has oppositely disposed depressions. At some distance in the rear of the projections a the plunger or clinching anvil a also has pointed triangular oppositely projecting portions a and depressions are formed in the sides of said plunger at the front and rear of each of said latter projecting portions. The projecting portions a and a are adapted to act, respectively, on the inwardly projecting lugs at the intermediate portions and end portions, respectively, of the levers (1 in the movement of the plunger or clinching anvil a, as will be later described.

The wire feeding portions which feed the wire from which the'staples are made will now be described and these parts will be designated by reference characters having the prefix b. The wire to be used is mounted or coiled on reels Z2 secured in brackets projecting laterally from each of the front rods 9, as shown in Figs. 1 and 2. From the reels 6 the wire is led downward over guiding sheaves 6 carried on small brackets secured at the outer ends of rods 6 which, in turn, project outwardly from the ends of'frame portions projecting outwardly from the sides of the frame portion a. The wire is held in alinement with sheaves b by passing through guide 6 also carried on rods 6 The wire also passes through an eye in an angularly adjustable member 12* carried on dog 6 The eye in member 6* can be swung out of line with lower guide 6 and the wire opening in dog I) to give a straightening effect to the wire as it is fed through said members. A cam 19 is secured at the right hand end of the cam shaft 52 (see Figs. 2 and 3) which cam has concentric cam tracks 6 and b tions of the frame projecting from the side of casing 8 and carry rollers at their upperends, respectively, engaging the said cam tracks, the lever b at the forward portion of the machine being controlled by the outer cam track and the lever b at the rear of the machine being controlled by the inner cam track. The levers b are moved to keep their rollers in contact with cam b by compression coiled springs Z2 surrounding plungers pivoted at their forward ends to said levers below their pivots and projecting through small brackets b at their rear ends, said brackets being bolted to the front and rear portions of casing 8. The front lever 79 ispivotally connected at its lower end by a link 6 to a wire feeding dog 6 The dog 6 is longitudinally apertured to receive'the wire and said wire passes over a series of teeth or corrugations formed on the upper surface of an open rectangular portion formed in said dog. A pawl 6 is pivoted in said dog above the said corrugated portion and has a lower corrugated surface adapted to co-operate with the first mentioned corrugated portion, said pawl Z2 being mounted so that it can swing forwardly but cannot swing rearwardly past the lower corrugated portion. The feeding dog 6 is mounted for sliding movement on a pair of vertically-spaced rods I) which have at their outer ends a stop dog I). The dog 6 is constructed similarly to the dog 6 carrying a similar swinging pawl which engages the corrugation on said dog to prevent retrograde movement of the wire as the dog 6 moves outwardly. The rear lever b is Levers b are pivoted to pormoans mounted on a shaft Z) extending through a hub pro ect1ng rearwardly from the frame, which shaft carries at 1ts outer end an arm b projecting downwardly. The arm 6 is connected b a link which link extends across to the other side of the machine to an 6 The arm 5 is reversely disposed tov the lower end of the front lever b and is pivotally connected by alink 6 to the wire feeding dog Z2 similar in every respect to the dog 5 already described and which is mounted to slide on a similar pair of vertically spaced rods I). At the outer end of the rods 6 is also a wire stop dog I) similar in all respects to the dog I) already referred to, it merely being reversely disposed. From the parts described it w'll be seen that by the rotation of cam bileversb will be oscillated and the feeding dogs 5 at each side of the machine will be ,reciprocated. The feeding dogs 5 andb as stated, have apertures therethrough through which. the wire is fed and said apertures are, inthe wire feeding operation, alined with the hardened tubes at and A2 carried in members 66. and a,

respectively.

The shaft a, to which reference has already been made, passes laterally substan-:

tially betweenthe levers Z) and'is supported at its outer end in a downwardly extending plate 6 wh ch is secured at the outer end of frame 8 ensions projecting laterally from casing 8.

The said shaft has secured thereto a cam If" disposed substantially between the levers b, which cam is disposed between and adapted to engage and move upstanding lugsb projecting upwardly from a rod 6 sliding in lugs carried by portions of the casing. 8. The lower end of each orthe levers 5 15 provided with a laterally extending lug 32" having semicircular grooves formed at their inner sides'in which the rod 6, is adapted to be moved. T he rod 5 can be disposed so as to be between the ends of levers b or to be moved into line with either of said levers. The cam b is always stopped by the stop lug 52, already'described, engaging the lug on lever 54 when the cam rollers on the levers I)" are at the high parts of their cam tracks. When the rod 6 is thus moved into line with the levers b they are held at such high or outer parts of the cam so that they are not oscillated thereby.

As already described, the shaft 64 carries the spaced cams a which move the slide a,

which slide carries the head a in which the clinching parts are mounted. The shaft a also has secured thereto immediately out Ward of the slide a at the left of the mathe table, as shown in Fig. 1.

time. time be disposed adjacent one end of rack 31, shown in Fig.

chine, as seen in Fig.10, a crank diskb hav-.- the wardly. projecting crank pin which movably engages the upper end of a lever Z1 intermediately pivoted to the lower stationary portion 04 of the frame andhav ing a slot at its lower end to engage over a pin b projecting outwardly from the side of slide 04 The shaft a is provided at its right hand end, as. seen in Fig. 2, with an operating handle 6 When said shaft is oscillated hy'its handle lever, the rod 6 is moved toengage or disengage the lower ends of leversgb the slide a is moved and the slide at is moved. The purpose of the movement of said slides wlll be later set forth.

The machine travels just above. a work machine is for stapling together the slats and also the slats and a wooden strip on porch curtains. These curtains are formed on .a loom and compriseslats connected together at spaced intervals by cords woven therebetween. The curtain is made in a continuous length on .theloom and passesto the stapling machine where-the slats extend lengthwise of slats 50- are folded withthe sides in contact, as shown in'F 1g. 9 and posltioned on topof: the

work plate [or table80. This platehas a. narrow upstanding portion so that the adja- 'cent slats ofthe curtainv can fold down at eitherside thereof. The two slats 50 are first stapled together to form the bottom ofthe curtain' Fig. 9 shows. these two slats already stapled and folded down at theleft side of the work table 80. In this operation, the staples are merely lnserted through two slats, such as the two narrow portions :0

shown-at the. left ofxthework table in Fig.

9, the molding 3 not being stapled at this The machine, as a whole, will, at this such the right hand end, as .1. The roller 63 at the end of. arm 62 will, at this time, be in contact with the bottom of the bar 45 and the cam shaft 52 is disengaged from the driving shaft 19. The motor 9 is started by the usual and convenient switch and the gears 12 and 20 are rotated. The

operator now grasps one of the handles 68:

and pulls outwardly thereon, thus through the link 69, disengaging'one of the pawls 70 and then swings "the lever bar 67 to rotate rod 66 and through the link 65 and lever 24 throws theclutch 20, and the beveled gear 18- is thus driven in a proper direction to travrse the machine to the left as seen in F i 51.

Through the rotation of the crank disk 28 by I Two of the j the chain 23, the roller moves in between the teeth '31 and moves the machine to the left.- \Vith each rotation of shaft 26 on which crank disk 28 is mounted and while the cam roller'30 is moving around the rounded bottom of teeth 31 the cam 37', through lever raises the slide 32'and applies the brake shoes 33 so that the machine is intermittentlyheld in stationaryposition. The movable portion 'of the machine is easily traversed on the truck wheels3. An intermittent traverse is thus given to the machine by the crank disk 28 and roller 3G engaging the rack teeth 31.

The machine is usually started somewhat at one end of the work. As soon as the roller 63 at the end of arm 62 passes the curved end of the bar it is allowed to move upwardly. This, .through the action of torsion spring 64, pulls up on the rod 159 and depresses the wedge block 54 on the lever 54, allowing the locking bolt'53 to be projected into the driving shaft 19 which connects the cam shaft 52 to said driving shaft. Said roller 63 after passing the end of bar 46 is projected outwardly by a spring 63 into the plane of bar 4A which is in the same plane as bar A6. Said cam shaft 52 then begins to revolve and the stapling operation commences. Previous to the starting of the machine, the handle 5 of shaft or has been thrown in the proper direction to move rod 6 into alinement withthe lower end of the front lever 6 This lever is thus thrown out of'operation and only the wire feeding dog 6 at the left of the machine, as shown in Fig. 2, will be operated. This dog will be operated through the rear lever b, the arm 6 link 5 shaft 6 and arm I). As the cam b revolves, said rear lever b will be oscillated and the feeding dog 6 will immediately feed forward a certain length of the wire, the stop dog b operating toprevent rearward movement of the wire as the feeding dog 6 moves outward for a fresh grip on the wire. It maybe here noted a that when the handle 6 is thrown, as stated,

the slide a is moved inwardly or toward the machine, This movement carries the head a which is on said slide inwardly toward the workso that a narrow spaceis formed between the end of head a and the front anvil a. This narrow space is suitable for the stapling of the two slats m. At the same time, the slide a is moved forward by the rotation of the shaft a and the action the crank disk 6 The tube a in said slide is therefore moved into alinement with the apertures through the feeding dogs, and the radial edge of the swinging guiding member a in said slide is substantially in alinement with the axis of said tube. The throw of the feedingdog 72 is properlyv adjusted to feed the wire through the tube a and across the main forming anvil a so that it projects beyondthe anvil substantially the distance of the width of the former a at the left of its is severed by the cutting bar a at the left, as

shown in Fig. 1a, which shears the wire off against the edge of tube A The wire is now bent about the anvlls a and a. As the former moves forward and thus bends the, wire about said anvil, it pushes the swinglng I .guide member a. in slide a backward, the

same swinging from the full line position shown in Fig. 12 to the dotted line position shown 1n sa1d figure. Duringrthis swinging movement the end of the wire which has been severed swings through the narrow slot' a in said guiding member and is thus prevented from any up-and-downmovement. A staple is thus perfectly formed and disposed in the grooves in the bending dies a in the former (0 t may be here stated that stapling machines, as a rule, employ a special flat wire of considerable stiifness. This type of wire is necessary in the stapling machine of the prior art in order to form a perfect staple and prevent the staple from bending out of its plane when the wire is fed across in front of the former and later severed and bent. The present machine uses ordinary round wire known as market wire. It was swinging feeding membershaving the nar row slots a therein were thus provided. 1th the use of these members thewire is kept in one-plane as it is fed across the front of the formerand a perfect staple can be formed of the ordinary round market wire.

This improvement in the machine, therefore,

greatly reduces the cost of manufacturing the product. The market wire, after the staple is driven and clinched, is in every respect just as strong and eflicient as the'flat special staple wire and the cost of the market wire is a great deal lessthanthe cost of the special flat staple wire. As soon as the wire is fed across the main forming anvil a the driving plunger a is moved forward and engages thewire and presses the same against said anvil al This action takes place be fore the former moves forward to bendand form the staple. As soon asthe staple is formed over the anvils a and (Z12 the driving plunger a" is again moved forward by the cam a and its levers e and a The staple is engaged by this driving plunger and moved forwardly. commences the forward driving movement of the staple the cam a through its levera begins to elevate the main forming anvil 61 Just as the driving plunger 

